Process of making brushes



A. w. LAMP, PROCESS OF MAKING BRUSHES.

APPLICATION FILED AUG.13|1920.

Patented Mayi), 1922.

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ARTHUR W, LAMP, OF CLEVELAND, OHIO, ASSIGNOR' TO WALTER J. CARTER, OF

- CLEVELAND, OHIO.

IROCESS OF MAKING BRUSHES.

Specification of Letters latent.

Patented. May 9, 1922.

Application filed August 13, 1920. Serial No. 403,253.

a full, clear, and exact description, reference being had to theaccompanying drawings.

This invention relates to brushes of the type wherein tufts of brushmaterial (preferably wire) are looped about pins or posts supportedbyopposed heads. Theobject of the invention is to provide a process formaking such brushes which will enable the latter to be manufactured withgreat rapidity and economy of production. In making brushes inaccordance with my invention, it is possible to employ for the same,simple and easily formed brush elements which are inexpensive ofmanufacture.

In the accompanying drawing wherein I have shown an illustrativeembodiment of my invention, Fig. 1 is a vertical sectional view of thebrush head showing the brush material supporting elements in position;Fig. 2 is a similar view showing the exten sion pins in position and thebrush material assembled thereon; Fig. 3 a vertical sectional viewshowing the method of compressing and clamping the brush material in thebrush head; Fig. at is an elevation of the completed article; Fig. 5 isa plan view with parts broken away to show the manner in which the brushmaterial is disposed about the supporting elements; Fig. 6 is a simi larview of a modification wherein the brush material is alternated aboutthe circumference of the head; Fig. 7 is a sectional view taken on theline 7-7 of Fig. 6 and Figs. 8 and 9 are perspective and verticalsectional views respectively of modifications of the brush materialsupporting elements.

Describing by reference characters, the various parts and stepsillustrated, 1 indicates an annular side head which is provided adjacentthe circumferential edge thereof with a series of countersunk apertures2, each of which receives a brusl1-material supporting element 8. Theelements 3 will be designated as posts hereinafter and may be formedfrom seamless tubing as shown in Fig. -1, or from seamedtubing as shownin Fig. 8, or from a rod as shown in Fig. 9, the

latter being provided at one end with a bore 5, the purpose of whichwill become apparent as the description proceeds. Each post is formed atone end with a headed portion 6 which in the case of the tubing isformedby flaring one end thereof, and in the case of the rod byupsetting an end or by turning down the body portion thereof. The headedportions so formed are adapted to fit within the countersunk portions ofthe apertures 2 and to lie flush with the outer surface of the head 1.An extension or guide pin 9, having a reducedportion 10 and a taperedshoulder 11, is next inserted into each of the posts 3,'thus permittinga series of brush material tufts 12 of greater aggregate width than thefinished brush to be looped about the posts and their respectiveextensions. as shown in Fig. 2. After a sutficient number of tuftshave'been applied to permit forming a brush of the desired width whencompressed, a head 14, similar in shape to the head 1 is fitted over theextension pins. I next compress the head 14 and the tufts, andsimultaneously lock said head in position. This step is accomplished bymeans of a die 15 which is provided with an annular series of bores 16disposed in alignment with the extension pins 9 and of a depth equal tothe depth of the enlarged portions of said pins It is thus apparentthat, as the die descends, it will carry the head 14 downward andcompress the tufts, until said head is slightly below he upper ends ofthe posts 3, at

which time the die will engage the tops of the extension pins andfurtherdownward movement will force the tapered shoulders 11 into theopen ends of the supporting posts which serves to flare said openingsand lock the head in tuft-compressing position. While I have shown aseries of tuftsapplied to each post it will be understood that the tuftsmay be applied equally'well to alternate posts or only to such postsasmay be desired. Y

In Figs. 6 and 7 Ihave shown a modification of my brush wherein anintermediate plate 20 is interposed between the heads 1 and 14 and thetufts are applied to alternate posts, the tufts between the head 1 andplate 20 being alternated with respect tufts is not essential.Furthermore, while I have shown in 7 a brush having only oneintermediate plate, it will be evident that any number of suchintermediate plates may be employed; and the movable head of a brush ofthis type may be forced towarr the fixed head to compress the brushknots and may be locked to the upper ends of the posts by a simplestroke of the die 15, in the same manner as described hereinbefore forthe brush shown in Figs. 1 to 6.

The heads 1 and 1e are provided with registering openings in the centersthereof, which openings are for the purpose of enabling the brush to bemounted upon an arbor or other operating support, as is customary.

For the purpose of enabling the upper ends of the posts to support theirextensions and to beexpanded into heads for locking the head 14:thereto, at least the upper end of each of said posts is tubular, asshown; and the term tubular as employed in the claims is intended toembrace posts which are tubular in part as well as tubular throughouttheir entire length.

Having thus described my invention, what I claim is 1. The process ofmaking a brush which comprises providing a head with tubular posts,inserting extensions into the ends of such posts which are remote fromsuch head, applying tuft material to said posts and extensions, applyingto such extensions a head having openings for the reception of suchextensions and for the ends of the posts in which the said extensionsare mounted, forcing the second mentioned head along such extensions andonto the ends of the posts, thereby compressing the tuft material andstripping it from the extensions, and expanding such post ends, therebyto lock the same into engagement with the metal surrounding the openingsin the second head.

2. The process of making a brush which comprises providing a head withtubular posts, inserting extensions into the ends of such posts whichare remote from such head, applying tuft material to said posts andextensions, applying to such extensions a head having openings for thereception of such extensions and for the ends of the posts in which thesaid extensions are mounted, forcing the second mentioned head alongsuch extensions and onto the ends of the posts, thereby compressing thetuft material and stripping it. from the extensions, and operating saidextensions thereby to expand the ends of the posts in which they arerespectively mounted into locking engagement with the second mentionedhead.

3. The process of making a brush which comprises providing. a head withposts having extensions, applying tuft material to the posts andextensions, applying to the extensions a head complementary to the firstmen tloned head and having openings for such extensions and for the endsof the posts carrying the same, forcing the second mentioned head alongthe extensions and onto the ends of the posts, thereby compressing thetuft material and stripping it from the extensions, and securing thesecond mentioned head to the said posts.

at. The process of making a brush which comprises providing a head withposts, applying extensions to the ends of the posts which are remotefrom such head, applying tuft material to the posts and extensions,applying to the extensions a head complementary to the first mentionedhead and having openings for such extensions and for the ends of theposts carrying the same, forcing the second mentioned head along theextensions and onto the ends of the posts, thereby compressing the tuftmaterial and stripping it from the extensions, and locking the secondhead to the said posts through movement of the said extensions towardthe first mentioned head.

5. The process of making a brush which comprises providing a head withposts, ap plying removable extensions to the ends of such posts whichare remote from such head, applying tuft material to said posts andextensions, applying to such extensions a head having openings for thereception of such extensions and for the ends of the posts carrying thesame, forcing the second mentioned head along such extensions and ontosuch ends of the posts, thereby compressing the tuft material andstripping it from the extensions, and securing the second mentioned headto the ends of the said posts which are remote from the first mentionedhead.

6. The process of making a brush which comprises providing a head withposts havin g removable extensions, applying tuft material to the postsand extensions, compressing the tuft material toward said head andstripping it from the extensions, and securing a second head to the saidposts and in operative engagement with such compressed tuft material.

7. The process of making a brush which comprises providing ahead withposts having removable extensions, applying tuft material to the postsand extensions, compressing the tuft material toward said head andstripping it fromvthe extensions, and secui ing a head to the firstmentioned head and in operative engagement with such compressed tuftmaterial.

In testimony whereof, I hereunto aflix my signature.

ARTHUR W. LAMP.

